From b97921b71fbd117c41650b5252fe94dbf87b5f6a Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sun, 6 Feb 2022 13:12:39 -0500
Subject: [PATCH] added extra GPIO.setmode(GPIO.BCM) for Tx LED on Pi 4

---
 rpitx.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rpitx.py b/rpitx.py
index bbf8ca30..e7ccaa9b 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -78,7 +78,8 @@ if __name__ == "__main__":
 		if (debug_mode == 1):
 			print("Can't read callsign from sim.cfg file, defaulting to AMSAT")		
 	print(callsign)
-
+        GPIO.setmode(GPIO.BCM)  # added to make Tx LED work on Pi 4
+	
 	sleep(1)
 	output(txLed, txLedOn)
 	if (debug_mode == 1):